✨ feat(sql-file-execution): 外部SQL执行切换工作台并优化大文件链路

- 前端将运行外部SQL改为工作台Tab并复用导出式进度视图

- 后端新增仅选择文件元数据接口并优化流式读取与批量拼接

- 补充执行Runner、国际化文案和定向测试

frontend/src/utils/sqlFileExecutionTab.test.ts

@@ -0,0 +1,36 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  buildSQLFileExecutionWorkbenchTab,
+  resolveSQLFileExecutionWorkbenchTabId,
+} from './sqlFileExecutionTab';
+
+describe('sqlFileExecutionTab', () => {
+  it('builds stable workbench ids by connection, database, and normalized file path', () => {
+    expect(resolveSQLFileExecutionWorkbenchTabId('conn-1', 'demo', 'D:\\sql\\seed.sql')).toBe(
+      'sql-file-execution-conn-1-demo-D:/sql/seed.sql',
+    );
+  });
+
+  it('builds sql file execution workbench tabs with execution metadata', () => {
+    const tab = buildSQLFileExecutionWorkbenchTab({
+      connectionId: 'conn-1',
+      dbName: 'demo',
+      filePath: 'D:\\sql\\seed.sql',
+      fileName: 'seed.sql',
+      fileSizeMB: '512.5',
+      requestKey: 'job-1',
+    });
+
+    expect(tab).toEqual(expect.objectContaining({
+      id: 'sql-file-execution-conn-1-demo-D:/sql/seed.sql',
+      title: 'seed.sql',
+      type: 'sql-file-execution',
+      connectionId: 'conn-1',
+      dbName: 'demo',
+      filePath: 'D:/sql/seed.sql',
+      sqlFileExecutionFileSizeMB: '512.5',
+      sqlFileExecutionRequestKey: 'job-1',
+    }));
+  });
+});

frontend/src/utils/sqlFileExecutionTab.ts

@@ -0,0 +1,46 @@
+import type { TabData } from '../types';
+import { t } from '../i18n';
+
+const normalizePathToken = (value: string): string =>
+  value.replace(/\\/g, '/').trim();
+
+export const resolveSQLFileExecutionWorkbenchTabId = (
+  connectionId: string,
+  dbName: string | undefined,
+  filePath: string,
+): string => {
+  const normalizedConnectionId = String(connectionId || '').trim() || 'none';
+  const normalizedDbName = String(dbName || '').trim() || 'default';
+  const normalizedFilePath = normalizePathToken(String(filePath || '')) || 'file';
+  return `sql-file-execution-${normalizedConnectionId}-${normalizedDbName}-${normalizedFilePath}`;
+};
+
+type BuildSQLFileExecutionWorkbenchTabInput = {
+  connectionId: string;
+  dbName?: string;
+  filePath: string;
+  fileName?: string;
+  fileSizeMB?: string;
+  requestKey?: string;
+};
+
+export const buildSQLFileExecutionWorkbenchTab = (
+  input: BuildSQLFileExecutionWorkbenchTabInput,
+): TabData => {
+  const connectionId = String(input.connectionId || '').trim();
+  const dbName = String(input.dbName || '').trim();
+  const filePath = normalizePathToken(String(input.filePath || ''));
+  const fileName = String(input.fileName || '').trim();
+  const defaultTitle = fileName || t('sidebar.sql_file_exec.title');
+
+  return {
+    id: resolveSQLFileExecutionWorkbenchTabId(connectionId, dbName || undefined, filePath),
+    title: defaultTitle,
+    type: 'sql-file-execution',
+    connectionId,
+    ...(dbName ? { dbName } : {}),
+    filePath,
+    sqlFileExecutionFileSizeMB: String(input.fileSizeMB || '').trim() || undefined,
+    sqlFileExecutionRequestKey: String(input.requestKey || `sql-file-execution-${Date.now()}`).trim(),
+  };
+};